Epson LQ 1050 Technical Manual - Page 209
A-14. NJM2355 Internal Circuit Diagram
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REV.-A A.1.6 NJ M2355 The NJ M2355 function is identical to the TL949 functions. It is a pulse-width modulation control circuit Ic. Figure A-1 4 shows the NJ M2355 internal circuit diagram. +IN ~ -IN m +IN m -IN m FEED BACK m :E& CONTROL m Vcc m c: z m POWER GND c El [L. V . S/ (t (P Vref CT RT +IN -IN FEED 12:EA; SY:J:M c l BACK CONTROL Figure A-14. NJM2355 Internal Circuit Diagram A-23
REV.-A
A.1.6
NJ
M2355
The NJ
M2355
function is identical to the TL949 functions. It is a pulse-width modulation control circuit
Ic.
Figure A-1 4 shows the NJ
M2355
internal circuit diagram.
+IN
-IN
+IN
-IN
FEED
:E&
POWER
BACK
Vcc
c: z
GND
CONTROL
~
m
m
m
m
m
m
m
c
(
P
[L.
V
.
S/
(
t
El
Vref
CT
RT
+IN
-IN
FEED
12:EA;
SY:J:M
BACK
CONTROL
cl
Figure A-14. NJM2355 Internal Circuit Diagram
A-23